Micronesia in December: Weather, Crowds & What to Expect

Palau & Yap (Palau; Yap State, FSM)

December’s return to more consistent northeast trade winds brings relatively drier and breezier conditions, with daytime temperatures around 27-29°C and more comfortable humidity. Koror and the Rock Islands are enjoyable for paddling and reef snorkeling as sea conditions calm; evenings are milder and less buggy than in the high-rain months. This is a popular time for visits, so book lodgings early and pack reef-safe sunscreen and a light jacket for wind on boat trips.

Central Caroline Islands (Chuuk, Pohnpei & Kosrae - Federated States of Micronesia)

A return to more consistent northeast trades in December brings clearer skies and more comfortable humidity across Chuuk, Pohnpei and Kosrae; daytime highs settle around 27-29°C. The seas are generally calmer for diving and lagoon tours, and inland excursions are less muddy than in the wet season. December is a convenient window for visiting cultural villages and arranging inter-island travel with far fewer weather-related cancellations.

Mariana Islands (Guam & Northern Mariana Islands - Guam; Saipan, Tinian, Rota)

December benefits from stronger trade winds and lower humidity compared with the wet months, producing comfortable coastal weather on Guam and Saipan and calmer seas for boat trips. Festive season travel raises demand for accommodation on the main islands, so bookings should be made early. Pack a light jacket for windblown evenings and expect steadier skies for outdoor exploring and diving.

Marshall Islands (Majuro, Kwajalein, Bikini Atoll - Republic of the Marshall Islands)

December’s trade-breeze influence grows, bringing drier, breezier conditions and more comfortable humidity for beach activities and lagoon travel; daytime highs hover in the high 20s °C. The atolls are easier to navigate by boat and diving trips become more dependable, though demand rises for the drier months. Pack sun protection and a light windbreaker for breezy boat rides between island communities.

Kiribati (Gilbert Islands) & Nauru

December often feels steamy with frequent tropical showers, though the pattern strongly depends on broader Pacific climate signals; daylight temperatures remain around 28-31°C. Holiday travel can stretch the modest local accommodation supply on Tarawa and Nauru, so bookings should be made in advance. Travelers need to be self-sufficient: bring medications, spare chargers and a willingness to accept simple conditions.